I run a (dodge4wd) NV4500 mated to the 231
Yeah you only need the correct input gear for the T-case with the correct spline count when using a(dodge 4wd NV4500) then it bolts right up.
Pretty simple install. I did mine when I had it apart doing a SYE to it.
To mount to the SBC you would need this
Thats all I know. Not sure about adapting a GM4wd NV4500 to T-case or engine
Oh yeah call Advanced adapters .. they can answer any questions you have and can get you everything you need for any swap